Summary

When using Wicked with recent versions of Rack, the following warning appears:

warning: Status code :unprocessable_entity is deprecated and will be removed in a future version of Rack. 
Please use :unprocessable_content instead.

See Rack#2137.

Details

There one occurrence in render_redirect.rb and one in the corresponding test (status_codes_controller_test.rb).

Possible fixes

• Replace symbol with :unprocessable_content and drop support for older versions of Rack
• Use a numeric status code 422 instead of named symbol
• Add code for backwards compatibility